"hole in the end of a needle" (cf. with the R. ушко иголки), which also developed through transference based on resemblance. A similar case is represented by the neck of a bottle.
The noun drop (mostly in the plural form) has, in addition to its main meaning "a small particle of water or other liquid", the meanings: "ear-rings shaped as drops of water" (e. g. diamond drops) and "candy of the same shape" (e. g. mint drops). It is quite obvious that both these meanings are also based on resemblance. In the compound word snowdrop the meaning of the second constituent underwent the same shift of meaning (also, in bluebell). In general, metaphorical change of meaning is often observed in idiomatic compounds.
The main meaning of the noun branch is "limb or subdivision of a tree or bush". On the basis of this meaning it developed several more. One of them is "a special field of science or art" (as in a branch of linguistics). This meaning brings us into the sphere of the abstract, and shows that in transference based on resemblance an association may be built not only between two physical objects, but also between a concrete object and an abstract concept.
The noun bar from the original meaning barrier developed a figurative meaning realised in such contexts as social bars, colour bar, racial bar. Here, again, as in the abstract meaning of branch, a concrete object is associated with an abstract concept.
The noun star on the basis of the meaning "heavenly body" developed the meaning "famous actor or actress". Nowadays the meaning has considerably widened its range, and the word is applied not only to screen idols (as it was at first), but, also, to popular sportsmen (e. g. football, stars), pop-singers, etc. Of course, the first use of the word star to denote a popular actor must have been humorous or ironical: the mental picture created by the use of the word in this new meaning was